We have obtained spectra of the likely host galaxy (Miller et al., GCN 10377) and afterglow (Levan et al., GCN 10386) of the short-hard GRB 100206A (Krimm et al, GCN 10376) with the Low Resolution Imaging Spectrometer mounted on the 10-m Keck I telescope. Observations began at 06:17 UT on 7 February (~ 16.8 hours after the burst) and cover the wavelength range from approximately 3500 - 10000 A. At the location of the candidate host galaxy, we detect a strongly red continuum consistent with the published photometry (Leloudas et al., GCN 10387). We detect strong, clearly resolved emission lines from H-alpha and [NII] at a redshift of z = 0.41. No other obvious lines are visible over spectral range in our preliminary reduction. The lack of H-beta, coupled with the red spectrum and colors, suggest a relatively dusty environment. At this redshift, the projected offset of ~ 6.8" from the candidate afterglow corresponds to a distance of ~ 35 kpc. No obvious trace is visible at the location of the afterglow. Observations and reduction are ongoing.